The Portable Batch System (PBS) is a flexible batch software
processing system developed at NASA Ames Research Center. It
operates on networked, multi-platform UNIX environments,
including heterogeneous clusters of workstations, supercomputers,
and massively parallel systems.
"This product includes software developed by NASA Ames Research
Center, Lawrence Livermore National Laboratory, and Veridian
Information Solutions, Inc. Visit www.OpenPBS.org for OpenPBS
software support,products, and information."